2013 VOLVO XC70 traction control

08 Wheels and tires
Uniform Tire Quality Grading
08
305 Quality grading information
ALL PASSENGER VEHICLE TIRES MUST
CONFORM TO FEDERAL SAFETY
REQUIREMENTS IN ADDITION TO THESE
GRADES
Quality grades can be found, where appli-
cable, on the tire sidewall between the tread
shoulder and maximum section width. For
example:
Treadwear 200 Traction AA Temperature A
TREADWEARThe treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course. For example, a tire gra-
ded 150 would wear one and one half (1 1/2)
times as well on the government course as a
tire graded 100. The relative performance of
tires depends upon the actual conditions of
their use, however, and many depart signifi-
cantly from the norm due to variation in driving
habits, maintenance practices and differences
in road characteristics and climate.
TRACTIONThe traction grades, from highest to lowest, are
AA, A, B, and C, as measured under controlled
conditions on specified government test sur-
faces of asphalt and concrete. A tire marked Cmay have poor traction performance. The trac-
tion grade assigned to this tire is based on
braking (straight-ahead) traction tests and is
not a measure of cornering (turning) traction.
WARNING
The traction grade assigned to this tire is
based on braking (straight-ahead) traction
tests and is not a measure of cornering
(turning) traction.
TEMPERATUREThe temperature grades are A (the highest), B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions
on a specified indoor laboratory test wheel.
Sustained high temperature can cause the
material of the tire to degenerate and reduce
tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds
to a minimum level of performance that all pas-
senger vehicle tires must meet under the Fed-
eral Motor Safety Standard No. 109. Grades B
and A represent higher levels of performance
on the laboratory test wheel than the minimum
required by law.
WARNING
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, under-
inflation, or excessive loading, either sepa-
rately or in combination, can cause heat
buildup and tire failure.

11 Index
11
372
Disconnecting the front passenger’s air-
bag....................................................... 26, 27
Dome lighting....................................... 98, 99
Door mirrors............................................. 105
Driver alert............................................... 166
Driver distraction warning.......................... 13
Driving economically................................ 268
Driving in cold weather............................ 270
Driving through water..............................269
E
ECC.........................................198, 200, 201
Economical driving.................................. 268
Electric parking brake.............................. 124
Electronic Climate Control.......198, 200, 201
air distribution table............................ 202
Interior Air Quality System.................. 201
ventilated seats................................... 198
Emergency locking retractor...................... 37
Emergency starting.................................. 116
Emergency towing................................... 288
Emission inspection readiness................ 323Engine
overheating........................................... 79
specifications...................................... 362
starting................................................ 113
switching off....................................... 116
Engine compartment overview................325
Engine oil................................................. 363
checking............................................. 326
low pressure warning light.............. 77, 78
volumes.............................................. 364
Engine remote start (ERS)........................ 115
Environment............................................... 12
Eyelets for anchoring loads..................... 278
F
Federal Clean Air Act............................... 322
Flat tires
repairing with tire sealing system....... 308
Floor mats
cleaning.............................................. 353
placing correctly................................. 113
Floor rails................................................. 278
Fluid specifications.................................. 364Fog lights
front, changing bulbs.......................... 334
front/rear......................................... 96, 97
Four C (active chassis system)................206
Front airbags.............................................. 22
disconnecting passenger’s side air-
bag.................................................. 26, 27
Front fog lights........................................... 96
changing bulbs................................... 334
Front park assist.............................. 172, 174
Front seats...........................................84, 86
heated................................................. 198
Fuel filler cap........................................... 274
Fuel filler door, opening........................... 273
Fuel level warning light.............................. 77
Fuel requirements............................ 271, 272
Fuel tank volume.....................................364
Fuses............................... 342, 343, 346, 349
G
Garage door opener
HomeLink® Wireless Control System. 110
Gasoline requirements............................. 272

11 Index
11
377
Supplemental restraint system.................. 21
warning light......................................... 78
Symbols, overview................................... 366
T
Tailgate
driving with it open.............................268
locking/unlocking.................................. 67
power operated.................................. 276
wiper/washer...................................... 101
Tailgate wipers......................................... 338
Taillights, changing bulbs........................ 334
Temporary spare tire............................... 307
Three-way catalytic converter................. 274
Tire designations.....................................300
Tire inflation pressure..............................299
Tire Pressure Monitoring System....317, 318
indicator light........................................ 77
Tires.........................................................294
age...................................................... 294
changing from summer to winter........ 295
glossary of terms................................ 302
improving economy............................ 295
inflation pressure................................ 297inflation pressure table.......................299
load ratings......................................... 298
rotation............................................... 294
Self-supporting run flat tires (SST)..... 319
snow...................................................306
spare................................................... 307
specifications...................................... 298
speed ratings...................................... 298
storing................................................. 296
studded............................................... 306
tire pressure monitoring system......... 317
tire sealing system.............................. 308
tread wear indicator............................ 295
uniform tire quality grading................. 305
Tire sealing system.................................. 308
Top tether anchors (child restraint sys-
tems).......................................................... 47
Touching up paint.................................... 353
Towing a trailer................................285, 286
trailer hitch.......................................... 286
Towing the vehicle................................... 288
Traction control........................................ 132
Trailer towing...................................285, 286
trailer hitch.......................................... 286Transmission
general description.....................118, 119
oil........................................................ 364
shiftlock override................................ 120
Tread wear indicator................................ 295
Trip computer.......................................... 204
Trip odometers.......................................... 80
Trips, long distance................................. 270
Tunnel detection........................................ 95
Turn signals............................................... 97
changing bulbs................................... 333
indicator lights...................................... 77
Two-stage booster cushion....................... 48
U
Uniform Tire Quality Grading...................305
Unlocking the tailgate................................ 67
Unlocking the vehicle..........................57, 66
Upholstery care....................................... 351